| absolute value |
the magnitude of a real number irrespective of its sign; distance of a real number from zero. [1/2 definitions] |
| adumbrate |
to give a vague sign or indication of ahead of time; foreshadow. [1/2 definitions] |
| AIDS-related complex |
a condition characterized by enlargement of the lymph nodes that may be an early sign of AIDS. |
| alpha wave |
the type of brain wave that is a sign of relaxation, having frequencies from eight to thirteen hertz; alpha rhythm. |
| alto clef |
in musical notation, a clef with middle C on the middle line of the staff, or the sign identifying this clef; viola clef. |
| ampersand |
a sign (&) that represents the word "and". |
| Aquarius |
the eleventh sign of the zodiac, which the sun enters about January 21. [2/3 definitions] |
| archer |
(cap.) the constellation or astrological sign of Sagittarius. [1/2 definitions] |
| Aries |
the first sign of the zodiac, which the sun enters about March 21. [2/3 definitions] |
| ascendant |
in astrology, the point in the earth's orbit intersecting with the apparent path of the sun, or the sign of the zodiac rising in the east, at the time of an event such as one's birth. [1/4 definitions] |
| Ash Wednesday |
the first day of Lent, on which some Christians put ashes on their foreheads as a sign of penitence. |
| asterisk |
a sign (*) used to indicate a footnote, an omission, or a break in the text, and for various other purposes. [1/2 definitions] |
| augury |
an omen or sign. [1/2 definitions] |
| auspice |
(often pl.) an omen or sign of the future, esp. one taken as favorable. [1/3 definitions] |
| autograph |
to sign one's name in or on, esp. as a souvenir. [1/4 definitions] |
| badge |
any distinguishing mark or sign. [1/3 definitions] |
| banner |
a sign printed on a piece of cloth. [1/6 definitions] |
| bass clef |
a sign on the fourth line of a musical staff, locating F below middle C; F clef. |
| betoken |
to be a token or sign of. |
| billing |
the order or size of performers' names as they appear on a printed program, screen credits, or the like, taken as a sign of relative status or importance. [1/3 definitions] |
| binomial |
in algebra, an expression made up of two terms with either a plus or a minus sign between them. [1/2 definitions] |